| 摘要 |
<p>A method for implementing Iu-Flex-Based MBMS, wherein: a SGSN sends a RAB request to a RNC; the RNC establishes a corresponding RAB for the multicast traffic according to said request and said SGSN sending the request; and at the same time, if said RNC detects a plurality of multicast traffics from other SGSNs correspond to a multicast traffic, said RNC will choose a SGSN as the primary SGSN and take the RAB between the primary SGSN and itself as the primary path to receive the multicast traffic and maintain the connections to other SGSNs; at last, transmission of the multicast traffic is performed through said primary SGSN, during the multicast traffic transmission process, said RNC may change the primary SGSN when necessary and receive multicast traffic through the RAB of the new primary SGSN and maintain the connections to other SGSNs. In this method, multicast traffics can be implemented simply and reliably. The method also helps to reduce consumption of network resources and improve network security and accounting management. <IMAGE></p> |
